1. BETTER IMAGES: The coated lens has transmittance and a refractive index, making the image brighter and clearer. The 0.75x magnification provides a clearer view of the object, enhancing your observation experience. 2. FIT: The auxiliary lens is designed for the standard M48 interface and can be used with all stereomicroscopes of the same diameter. These lenses are an replacement for old or damaged parts. Working distance: approx. 120 mm/4.72 inches. 3. FINE CRAFTSMANSHIP: The microscope lens combines an aluminum alloy body and optical glass materials, making it durable and resistant to breakage even after prolonged use. It ensures a wide field of view and comfortable viewing, with no corrosion or glare. 4. EASY INSTALLATION: The microscope objective is compact and simple to install on the lens. Just screw it on for effortless operation. If your stereo microscope has a 30x magnification, this item can provide 22.5x magnification.